Removal of Volatile Chlorinated Compounds (TCE,PCE) from Groundwater with Nanostructure of NZVI

, M.Sc. Thesis Sharif University of Technology Ghasemipoor, Amir (Author) ; Bastani, Darioush (Supervisor) ; Seifkordi, Ali Akbar (Supervisor) ; Samiee, Leila (Supervisor) ; Dastgheib, Mohammad Mehdi (Co-Advisor)

Abstract

In recent years, the reductive dehalogenation of the chlorinated hydrocarbons using nanoscale zerovalent iron (nZVI) represents a promising approach for underground remediation. Regarding commercialization of this technique, instability and unknown nature of nZVI particle are still challenging tasks that should be considered.
In the current work, Nanoscale zero-valent iron (nZVI) and palladized iron (Pd/Fe) bimetallic particles were synthesized and employed to react with chlorinated compound (PCE) in water to investigate its degradation behaviors. The results show that the reactant ratio, stabilizer amount and temperature are the main parameters with the considerable effect on PCE...

Application of Zero Valent Iron Nanoparticles for Removal of Poly Chlorinated Biphenyls (PCBs) Contaminants

, M.Sc. Thesis Sharif University of Technology Karkooti, Amin (Author) ; Vossoughi, Manoochehr (Supervisor) ; Borgheei, Mahdi (Supervisor)

Abstract

Recent advances suggest that many of the issues involving in improving water quality could be solved by using nano particles. Aquifer and groundwater remediation are also critical issues. Becoming more important as water supplies steadily decrease and demand continues to increase. Although some of the remediation technologies available today are , they are costly and time-consuming, especially pump and treat methods. A wide range of nano particles have been used for the removal of organic and inorganic contaminants. In the first part of this work, zero-valent Iron nano particles was synthesized and was covered with nickel as catalyst. Diameter of the synthesized nano particles was...

Experimental Study of Water Flow on Migration of DNAPL in Fracture Network: Distribution, Transport and Remediation using Density Modification of Surfactant

, M.Sc. Thesis Sharif University of Technology Shirzadi, Vahid (Author) ; Ghazanfari, Mohammad Hossein (Supervisor)

Abstract

Groundwater is one of the vital sources of drinking water worldwide, yet it faces the risk of contamination from organic and inorganic substances. These pollutants can persist in the environment for extended periods, leading to continuous contamination. One of the key factors in the rapid transport of these contaminants is the presence of fracture networks within porous media. These fractures play a crucial role in facilitating the movement of pollutants to deeper layers of groundwater aquifers. The fracture networks enable contaminants to migrate more rapidly and penetrate various regions, complicating pollution management. Additionally, the natural flow of groundwater acts as a driving...